Kneading machine specially for dry and slimy masses



Dec. 18 1923.

v P. GUNDLACH KNEADING momma: SPECIALLY FOR DRY AND sum MASSES FiledOat. 2. 1922 WitnesSes:

Patented Dec, 18, 1923..

UNETE stares PAUL GUNDLAGH, F BREIEEN, GERMANY.

KNEADING MACHINE SPECIAL-LY FOE DRY AND SLIMY MASSES.

Application filed October 2, 1922.

To all whom it may concern:

Be it known that 1, PAUL GUNDLAGH, a citizen of the German Republic,residing at Bremen, Germany, have invented certain new and usefulImprovements in Kneading Machines Specially for Dry and Slimy Masses(for which an application for patent has been filed in Germany on the21st of April, 1922), of which the following is a l specification.

This invention relates to a kneading machine, specially for dry andliquid masses, for instance dry colouring matter or colouring matter tobe mixed. Colouring matter must be well mixed and kneaded in the drystate and during the stirring a very thorough agitating is alsorequired.

The kneading machines which hitherto been used for this purpose do notpermit of a perfect kneading of colouring matter as there remain alwaysgrains which have not been treated and kneaded and an intimate mixing isnot produced.

According to this invention such a perfeet working and kneading isensured as has hitherto never been possible with any kneading machine ofknown construction.

The invention consists in that in the rotating tub a stationary plate ofthe shape of a plough share is arranged which lifts the materialadvancing with the rotating tub, turns the material over and pushes thesame towards the center of the tub. A further improvement is that theturning plate in the shape of a plough share cooperates with twokneaders working in vertical direction in proximity of the center of thetub. The turning plate is in contact with the bottom of the tub and withthe side wall of the same and it is constructed like a scraper. Theturning plate is removably mounted upon the frame of the machine so thatit can be withdrawn fron'i. the tub.

The invention can be carried. out in various manners. A preferred formof construction is shown by way of example in the accompanying drawing,wherein:

Fig. 1 shows the improved kneading machine in front elevation.

Fig. 2 is a section on line I-T of Fig. 1.

Fig. 3 is a plan view of Fig. 2.

The kneading machine consists in the well known manner of the machineframe a and of a frame I) which is adjustable in vertical direction andhas kneading arms d with have Serial No. 591,832.

blades e. The kneading arms (5 can be operated in the well known manner.

According to the invention a stationary turning plate It is arranged inthe rotatable tub j which is transportable and adapted to be rotated bya transmission gear y. This turning plate It has the shape of a ploughshare and it is arranged so that it extends betweenthe two kneadingblades c and acts as scraper as it is in contact with the bottom andwith the side wall of the tub.

The turning plate it projects with its pointed end 71 between thekneading arms and extends beyond the center of the tub.

When the tub is rotating the mass to be treated is conducted towards theturning plate; The mass in scraped by the turning plate on the bottomand the side wall, turned over and pushed towards the center of the tubso that it can be treated by the kneading arms which are adapted to beoperated during the rotation of the tub.

The turning plate It is supported by an arm 2' which is removably fixedby means of a screw Z: in a guide Z of the machine frame a. The turningplate which acts like a plough share can therefore be removed from thetub before the same is carted off. The turning plate 71. can be easilycleaned if it is to be used for other colouring matter. The turningplate 72. can be adjustably mounted upon the arm 2' or this arm 2' canbe mounted upon the machine frame so that it can be adjusted in lateraldirection.

The curvature of the turning plate It is more or less pronouncedaccording to whether the material has only to be lifted or to be pushedtowards the center of the tub.

I claim 1. In a device of the class described, a rotatable tub tocontain a mass of material to be treated. 21 therein containedstationary turning plate similar to a plough share having a vertical.portion extending to near the top of the tub and an angularly arrangedportion extending beyond the centre of the bottom of the tub andterminating in a pointed end to respectively contact the side and bottomportions of the tub to simultaneously scrape the same whereby the massconducted toward it by the rotation of the tub is lifted, turned over,and pushed toward the centre of the tub, and two kneaders arran ed inproximity to the centre of the tub to co-operate with said stationaryturning plate to knead the said centralized mass, the kneaders beingrespectively of convex and concaveformation. i

2. In a device of the class described, a rotatable tub to contain a massof material to be treated, a therein contained stationary turning platesimilar to-a plough share having a vertical portion extending to nearthe top of the tub and an angularly arranged portion extending beyondthe centre of the bottom of the tub and terminating in a pointed end torespectively "contact the'side "and bottom portions of thetu'b'to'siinultaneously scrape the same -whereby-thenrass conductedtoward it by the rotation of 'thetub is lifted, turned over,"2'1ndpushed toward the centre of the said tnb in-combination with twovertically operating'ltneaders arranged 'in alignment on-opposite sidesof the'said stationary turning plate to -knead*the said centralizedmass.

3. In a device ofthe classdescribed, a rotatable tub to contain amassof'material to be treated, a. therein contained stationary turning platesimilar to a plough share. having-a vertical portion extending to nearthe t-op of the tub and an-ang'ularly arranged portion extending beyondthe centre of the bottom of the tub and terminating in a pointed end'torespectively contact the side and bottom portions otthe tub tosimultaneously scrape the same whereby the mass conducted toward it bythe rotation of the tub is lifted, turned over, and pushed toward thecentre of the'said-tub, incombination with two vertically operating"kneaders arranged on opposite sides of thesaid stationary turning.plate to knead the said centralized mass, the kneaders being operatedduringthe rotation ofthe tub, and lying substantially atrig'ht angles tothe end of the said turning plate.

In testimony'whereot I afiix my signature in presence of two witnesses.

"PAUL' GUNDLACH. *Witnesses:

FRANCIS J. DUGAN, F. BTiUENING.

